What does query mean in php?

query in php refers to a query method, such as the "mysql_query()" function. This function is used to execute a MySQL query. Its syntax is "mysql_query(query,connection)". The parameter query specifies the data to be sent. SQL query.

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, Dell G3 computer.

What does query mean in php?

The mysql_query() function executes a MySQL query.

Syntax

mysql_query(query,connection)

Description

query Required. Specifies the SQL query to be sent. Note: The query string should not end with a semicolon.

connection Optional. Specifies the SQL connection identifier. If not specified, the last opened connection is used.

Description

If there is no open connection, this function will try to call the mysql_connect() function without parameters to establish a connection and use it.

Return value

mysql_query() returns a resource identifier only for SELECT, SHOW, EXPLAIN or DESCRIBE statements, or FALSE if the query is executed incorrectly.

For other types of SQL statements, mysql_query() returns TRUE when executed successfully and FALSE when an error occurs.

A non-FALSE return value means the query is valid and can be executed by the server. This does not say anything about the number of rows affected or returned. It's possible that a query executed successfully but did not affect or return any rows.

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